From b1f392c25e214b331f87737d9e27aad30e95f201 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com>
Date: Wed, 24 Aug 2022 12:05:37 +0200
Subject: Remove VisualScript module for 4.0

As announced in https://godotengine.org/article/godot-4-will-discontinue-visual-scripting,
Godot maintainers have agreed to discontinue the current implementation of
our VisualScript language.

The way it had been designed was not user-friendly enough and we did not
succeed in improving its usability to actually make it a good low-code
solution for users who need one.

So we prefer to remove it for Godot 4.0 and leave the door open for new,
innovative ideas around visual scripting, to be developed as plugins or
extensions now that Godot provides sufficient functionality for this
(notably via GDExtension and the godot-cpp C++ bindings).

The current module has been moved to a dedicated repository (with full Git
history extracted with `git filter-branch`):

https://github.com/godotengine/godot-visual-script

It can still be compiled as a C++ module (for now, but will likely require
work to be kept in sync with the engine repository), but our hope is that
contributors will port it to GDExtension (which is quite compatibile with
the existing C++ module code when using the godot-cpp C++ bindings).
---
 modules/visual_script/visual_script.cpp | 2506 -------------------------------
 1 file changed, 2506 deletions(-)
 delete mode 100644 modules/visual_script/visual_script.cpp

(limited to 'modules/visual_script/visual_script.cpp')

diff --git a/modules/visual_script/visual_script.cpp b/modules/visual_script/visual_script.cpp
deleted file mode 100644
index 73249371cd..0000000000
--- a/modules/visual_script/visual_script.cpp
+++ /dev/null
@@ -1,2506 +0,0 @@
-/*************************************************************************/
-/*  visual_script.cpp                                                    */
-/*************************************************************************/
-/*                       This file is part of:                           */
-/*                           GODOT ENGINE                                */
-/*                      https://godotengine.org                          */
-/*************************************************************************/
-/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
-/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
-/*                                                                       */
-/* Permission is hereby granted, free of charge, to any person obtaining */
-/* a copy of this software and associated documentation files (the       */
-/* "Software"), to deal in the Software without restriction, including   */
-/* without limitation the rights to use, copy, modify, merge, publish,   */
-/* distribute, sublicense, and/or sell copies of the Software, and to    */
-/* permit persons to whom the Software is furnished to do so, subject to */
-/* the following conditions:                                             */
-/*                                                                       */
-/* The above copyright notice and this permission notice shall be        */
-/* included in all copies or substantial portions of the Software.       */
-/*                                                                       */
-/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
-/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
-/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
-/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
-/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
-/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
-/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
-/*************************************************************************/
-
-#include "visual_script.h"
-
-#include "core/config/project_settings.h"
-#include "core/core_string_names.h"
-#include "core/os/os.h"
-#include "scene/main/node.h"
-#include "visual_script_nodes.h"
-
-// Used by editor, this is not really saved.
-void VisualScriptNode::set_breakpoint(bool p_breakpoint) {
-	breakpoint = p_breakpoint;
-}
-
-bool VisualScriptNode::is_breakpoint() const {
-	return breakpoint;
-}
-
-void VisualScriptNode::ports_changed_notify() {
-	emit_signal(SNAME("ports_changed"));
-}
-
-void VisualScriptNode::set_default_input_value(int p_port, const Variant &p_value) {
-	ERR_FAIL_INDEX(p_port, default_input_values.size());
-
-	default_input_values[p_port] = p_value;
-
-#ifdef TOOLS_ENABLED
-	if (script_used.is_valid()) {
-		script_used->set_edited(true);
-	}
-#endif
-}
-
-Variant VisualScriptNode::get_default_input_value(int p_port) const {
-	ERR_FAIL_INDEX_V(p_port, default_input_values.size(), Variant());
-	return default_input_values[p_port];
-}
-
-void VisualScriptNode::_set_default_input_values(Array p_values) {
-	default_input_values = p_values;
-}
-
-void VisualScriptNode::validate_input_default_values() {
-	default_input_values.resize(MAX(default_input_values.size(), get_input_value_port_count())); //let it grow as big as possible, we don't want to lose values on resize
-
-	// Actually validate on save.
-	for (int i = 0; i < get_input_value_port_count(); i++) {
-		Variant::Type expected = get_input_value_port_info(i).type;
-
-		if (expected == Variant::NIL || expected == default_input_values[i].get_type()) {
-			continue;
-		} else {
-			// Not the same, reconvert.
-			Callable::CallError ce;
-			Variant existing = default_input_values[i];
-			const Variant *existingp = &existing;
-			Variant::construct(expected, default_input_values[i], &existingp, 1, ce);
-			if (ce.error != Callable::CallError::CALL_OK) {
-				//could not convert? force..
-				Variant::construct(expected, default_input_values[i], nullptr, 0, ce);
-			}
-		}
-	}
-}
-
-Array VisualScriptNode::_get_default_input_values() const {
-	// Validate on save, since on load there is little info about this.
-	Array values = default_input_values;
-	values.resize(get_input_value_port_count());
-
-	return values;
-}
-
-String VisualScriptNode::get_text() const {
-	return "";
-}
-
-void VisualScriptNode::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("get_visual_script"), &VisualScriptNode::get_visual_script);
-	ClassDB::bind_method(D_METHOD("set_default_input_value", "port_idx", "value"), &VisualScriptNode::set_default_input_value);
-	ClassDB::bind_method(D_METHOD("get_default_input_value", "port_idx"), &VisualScriptNode::get_default_input_value);
-	ClassDB::bind_method(D_METHOD("ports_changed_notify"), &VisualScriptNode::ports_changed_notify);
-	ClassDB::bind_method(D_METHOD("_set_default_input_values", "values"), &VisualScriptNode::_set_default_input_values);
-	ClassDB::bind_method(D_METHOD("_get_default_input_values"), &VisualScriptNode::_get_default_input_values);
-
-	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "_default_input_values", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR | PROPERTY_USAGE_INTERNAL), "_set_default_input_values", "_get_default_input_values");
-	ADD_SIGNAL(MethodInfo("ports_changed"));
-}
-
-VisualScriptNode::TypeGuess VisualScriptNode::guess_output_type(TypeGuess *p_inputs, int p_output) const {
-	ERR_FAIL_COND_V(get_output_value_port_count() <= p_output, TypeGuess());
-
-	PropertyInfo pinfo = get_output_value_port_info(p_output);
-
-	TypeGuess tg;
-
-	tg.type = pinfo.type;
-	if (pinfo.hint == PROPERTY_HINT_RESOURCE_TYPE) {
-		tg.gdclass = pinfo.hint_string;
-	}
-
-	return tg;
-}
-
-Ref<VisualScript> VisualScriptNode::get_visual_script() const {
-	return script_used;
-}
-
-VisualScriptNode::VisualScriptNode() {
-}
-
-////////////////
-
-/////////////////////
-
-VisualScriptNodeInstance::VisualScriptNodeInstance() {
-}
-
-VisualScriptNodeInstance::~VisualScriptNodeInstance() {
-	if (sequence_outputs) {
-		memdelete_arr(sequence_outputs);
-	}
-
-	if (input_ports) {
-		memdelete_arr(input_ports);
-	}
-
-	if (output_ports) {
-		memdelete_arr(output_ports);
-	}
-}
-
-void VisualScript::add_function(const StringName &p_name, int p_func_node_id) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!String(p_name).is_valid_identifier());
-	ERR_FAIL_COND(functions.has(p_name));
-	ERR_FAIL_COND(variables.has(p_name));
-	ERR_FAIL_COND(custom_signals.has(p_name));
-
-	functions[p_name] = Function();
-	functions[p_name].func_id = p_func_node_id;
-}
-
-bool VisualScript::has_function(const StringName &p_name) const {
-	return functions.has(p_name);
-}
-
-void VisualScript::remove_function(const StringName &p_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_name));
-
-	// Let the editor handle the node removal.
-	functions.erase(p_name);
-}
-
-void VisualScript::rename_function(const StringName &p_name, const StringName &p_new_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!functions.has(p_name));
-	if (p_new_name == p_name) {
-		return;
-	}
-
-	ERR_FAIL_COND(!String(p_new_name).is_valid_identifier());
-
-	ERR_FAIL_COND(functions.has(p_new_name));
-	ERR_FAIL_COND(variables.has(p_new_name));
-	ERR_FAIL_COND(custom_signals.has(p_new_name));
-
-	functions[p_new_name] = functions[p_name];
-	functions.erase(p_name);
-}
-
-void VisualScript::set_scroll(const Vector2 &p_scroll) {
-	scroll = p_scroll;
-}
-
-Vector2 VisualScript::get_scroll() const {
-	return scroll;
-}
-
-void VisualScript::get_function_list(List<StringName> *r_functions) const {
-	for (const KeyValue<StringName, Function> &E : functions) {
-		r_functions->push_back(E.key);
-	}
-}
-
-int VisualScript::get_function_node_id(const StringName &p_name) const {
-	ERR_FAIL_COND_V(!functions.has(p_name), -1);
-
-	return functions[p_name].func_id;
-}
-
-void VisualScript::_node_ports_changed(int p_id) {
-	Ref<VisualScriptNode> vsn = nodes[p_id].node;
-
-	vsn->validate_input_default_values();
-
-	// Must revalidate all the functions.
-
-	{
-		List<SequenceConnection> to_remove;
-
-		for (const SequenceConnection &E : sequence_connections) {
-			if (E.from_node == p_id && E.from_output >= vsn->get_output_sequence_port_count()) {
-				to_remove.push_back(E);
-			}
-			if (E.to_node == p_id && !vsn->has_input_sequence_port()) {
-				to_remove.push_back(E);
-			}
-		}
-
-		while (to_remove.size()) {
-			sequence_connections.erase(to_remove.front()->get());
-			to_remove.pop_front();
-		}
-	}
-
-	{
-		List<DataConnection> to_remove;
-
-		for (const DataConnection &E : data_connections) {
-			if (E.from_node == p_id && E.from_port >= vsn->get_output_value_port_count()) {
-				to_remove.push_back(E);
-			}
-			if (E.to_node == p_id && E.to_port >= vsn->get_input_value_port_count()) {
-				to_remove.push_back(E);
-			}
-		}
-
-		while (to_remove.size()) {
-			data_connections.erase(to_remove.front()->get());
-			to_remove.pop_front();
-		}
-	}
-
-#ifdef TOOLS_ENABLED
-	set_edited(true); // Something changed, let's set as edited.
-	emit_signal(SNAME("node_ports_changed"), p_id);
-#endif
-}
-
-void VisualScript::add_node(int p_id, const Ref<VisualScriptNode> &p_node, const Point2 &p_pos) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(nodes.has(p_id)); // ID can exist only one in script.
-	ERR_FAIL_COND(p_node.is_null());
-
-	NodeData nd;
-	nd.node = p_node;
-	nd.pos = p_pos;
-
-	Ref<VisualScriptNode> vsn = p_node;
-	vsn->connect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed).bind(p_id));
-	vsn->script_used = Ref<VisualScript>(this);
-	vsn->validate_input_default_values(); // Validate when fully loaded.
-
-	nodes[p_id] = nd;
-}
-
-void VisualScript::remove_node(int p_id) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!nodes.has(p_id));
-	{
-		List<SequenceConnection> to_remove;
-
-		for (const SequenceConnection &E : sequence_connections) {
-			if (E.from_node == p_id || E.to_node == p_id) {
-				to_remove.push_back(E);
-			}
-		}
-
-		while (to_remove.size()) {
-			sequence_connections.erase(to_remove.front()->get());
-			to_remove.pop_front();
-		}
-	}
-
-	{
-		List<DataConnection> to_remove;
-
-		for (const DataConnection &E : data_connections) {
-			if (E.from_node == p_id || E.to_node == p_id) {
-				to_remove.push_back(E);
-			}
-		}
-
-		while (to_remove.size()) {
-			data_connections.erase(to_remove.front()->get());
-			to_remove.pop_front();
-		}
-	}
-
-	nodes[p_id].node->disconnect("ports_changed", callable_mp(this, &VisualScript::_node_ports_changed));
-	nodes[p_id].node->script_used.unref();
-
-	nodes.erase(p_id);
-}
-
-bool VisualScript::has_node(int p_id) const {
-	return nodes.has(p_id);
-}
-
-Ref<VisualScriptNode> VisualScript::get_node(int p_id) const {
-	ERR_FAIL_COND_V(!nodes.has(p_id), Ref<VisualScriptNode>());
-
-	return nodes[p_id].node;
-}
-
-void VisualScript::set_node_position(int p_id, const Point2 &p_pos) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!nodes.has(p_id));
-	nodes[p_id].pos = p_pos;
-}
-
-Point2 VisualScript::get_node_position(int p_id) const {
-	ERR_FAIL_COND_V(!nodes.has(p_id), Point2());
-	return nodes[p_id].pos;
-}
-
-void VisualScript::get_node_list(List<int> *r_nodes) const {
-	for (const KeyValue<int, NodeData> &E : nodes) {
-		r_nodes->push_back(E.key);
-	}
-}
-
-void VisualScript::sequence_connect(int p_from_node, int p_from_output, int p_to_node) {
-	ERR_FAIL_COND(instances.size());
-
-	SequenceConnection sc;
-	sc.from_node = p_from_node;
-	sc.from_output = p_from_output;
-	sc.to_node = p_to_node;
-	ERR_FAIL_COND(sequence_connections.has(sc));
-
-	sequence_connections.insert(sc);
-}
-
-void VisualScript::sequence_disconnect(int p_from_node, int p_from_output, int p_to_node) {
-	SequenceConnection sc;
-	sc.from_node = p_from_node;
-	sc.from_output = p_from_output;
-	sc.to_node = p_to_node;
-	ERR_FAIL_COND(!sequence_connections.has(sc));
-
-	sequence_connections.erase(sc);
-}
-
-bool VisualScript::has_sequence_connection(int p_from_node, int p_from_output, int p_to_node) const {
-	SequenceConnection sc;
-	sc.from_node = p_from_node;
-	sc.from_output = p_from_output;
-	sc.to_node = p_to_node;
-
-	return sequence_connections.has(sc);
-}
-
-void VisualScript::get_sequence_connection_list(List<SequenceConnection> *r_connection) const {
-	for (const SequenceConnection &E : sequence_connections) {
-		r_connection->push_back(E);
-	}
-}
-
-void VisualScript::data_connect(int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
-	ERR_FAIL_COND(instances.size());
-
-	DataConnection dc;
-	dc.from_node = p_from_node;
-	dc.from_port = p_from_port;
-	dc.to_node = p_to_node;
-	dc.to_port = p_to_port;
-
-	ERR_FAIL_COND(data_connections.has(dc));
-
-	data_connections.insert(dc);
-}
-
-void VisualScript::data_disconnect(int p_from_node, int p_from_port, int p_to_node, int p_to_port) {
-	DataConnection dc;
-	dc.from_node = p_from_node;
-	dc.from_port = p_from_port;
-	dc.to_node = p_to_node;
-	dc.to_port = p_to_port;
-
-	ERR_FAIL_COND(!data_connections.has(dc));
-
-	data_connections.erase(dc);
-}
-
-bool VisualScript::has_data_connection(int p_from_node, int p_from_port, int p_to_node, int p_to_port) const {
-	DataConnection dc;
-	dc.from_node = p_from_node;
-	dc.from_port = p_from_port;
-	dc.to_node = p_to_node;
-	dc.to_port = p_to_port;
-
-	return data_connections.has(dc);
-}
-
-bool VisualScript::is_input_value_port_connected(int p_node, int p_port) const {
-	for (const DataConnection &E : data_connections) {
-		if (E.to_node == p_node && E.to_port == p_port) {
-			return true;
-		}
-	}
-	return false;
-}
-
-bool VisualScript::get_input_value_port_connection_source(int p_node, int p_port, int *r_node, int *r_port) const {
-	for (const DataConnection &E : data_connections) {
-		if (E.to_node == p_node && E.to_port == p_port) {
-			*r_node = E.from_node;
-			*r_port = E.from_port;
-			return true;
-		}
-	}
-	return false;
-}
-
-void VisualScript::get_data_connection_list(List<DataConnection> *r_connection) const {
-	for (const DataConnection &E : data_connections) {
-		r_connection->push_back(E);
-	}
-}
-
-void VisualScript::set_tool_enabled(bool p_enabled) {
-	is_tool_script = p_enabled;
-}
-
-void VisualScript::add_variable(const StringName &p_name, const Variant &p_default_value, bool p_export) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!String(p_name).is_valid_identifier());
-	ERR_FAIL_COND(variables.has(p_name));
-
-	Variable v;
-	v.default_value = p_default_value;
-	v.info.type = p_default_value.get_type();
-	v.info.name = p_name;
-	v.info.hint = PROPERTY_HINT_NONE;
-	v._export = p_export;
-
-	variables[p_name] = v;
-
-#ifdef TOOLS_ENABLED
-	_update_placeholders();
-#endif
-}
-
-bool VisualScript::has_variable(const StringName &p_name) const {
-	return variables.has(p_name);
-}
-
-void VisualScript::remove_variable(const StringName &p_name) {
-	ERR_FAIL_COND(!variables.has(p_name));
-	variables.erase(p_name);
-
-#ifdef TOOLS_ENABLED
-	_update_placeholders();
-#endif
-}
-
-void VisualScript::set_variable_default_value(const StringName &p_name, const Variant &p_value) {
-	ERR_FAIL_COND(!variables.has(p_name));
-
-	variables[p_name].default_value = p_value;
-
-#ifdef TOOLS_ENABLED
-	_update_placeholders();
-#endif
-}
-
-Variant VisualScript::get_variable_default_value(const StringName &p_name) const {
-	ERR_FAIL_COND_V(!variables.has(p_name), Variant());
-	return variables[p_name].default_value;
-}
-
-void VisualScript::set_variable_info(const StringName &p_name, const PropertyInfo &p_info) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!variables.has(p_name));
-	variables[p_name].info = p_info;
-	variables[p_name].info.name = p_name;
-
-#ifdef TOOLS_ENABLED
-	_update_placeholders();
-#endif
-}
-
-PropertyInfo VisualScript::get_variable_info(const StringName &p_name) const {
-	ERR_FAIL_COND_V(!variables.has(p_name), PropertyInfo());
-	return variables[p_name].info;
-}
-
-void VisualScript::set_variable_export(const StringName &p_name, bool p_export) {
-	ERR_FAIL_COND(!variables.has(p_name));
-
-	variables[p_name]._export = p_export;
-#ifdef TOOLS_ENABLED
-	_update_placeholders();
-#endif
-}
-
-bool VisualScript::get_variable_export(const StringName &p_name) const {
-	ERR_FAIL_COND_V(!variables.has(p_name), false);
-	return variables[p_name]._export;
-}
-
-void VisualScript::_set_variable_info(const StringName &p_name, const Dictionary &p_info) {
-	PropertyInfo pinfo;
-	if (p_info.has("type")) {
-		pinfo.type = Variant::Type(int(p_info["type"]));
-	}
-	if (p_info.has("name")) {
-		pinfo.name = p_info["name"];
-	}
-	if (p_info.has("hint")) {
-		pinfo.hint = PropertyHint(int(p_info["hint"]));
-	}
-	if (p_info.has("hint_string")) {
-		pinfo.hint_string = p_info["hint_string"];
-	}
-	if (p_info.has("usage")) {
-		pinfo.usage = p_info["usage"];
-	}
-
-	set_variable_info(p_name, pinfo);
-}
-
-Dictionary VisualScript::_get_variable_info(const StringName &p_name) const {
-	PropertyInfo pinfo = get_variable_info(p_name);
-	Dictionary d;
-	d["type"] = pinfo.type;
-	d["name"] = pinfo.name;
-	d["hint"] = pinfo.hint;
-	d["hint_string"] = pinfo.hint_string;
-	d["usage"] = pinfo.usage;
-
-	return d;
-}
-
-void VisualScript::get_variable_list(List<StringName> *r_variables) const {
-	for (const KeyValue<StringName, Variable> &E : variables) {
-		r_variables->push_back(E.key);
-	}
-}
-
-void VisualScript::set_instance_base_type(const StringName &p_type) {
-	ERR_FAIL_COND(instances.size());
-	base_type = p_type;
-}
-
-void VisualScript::rename_variable(const StringName &p_name, const StringName &p_new_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!variables.has(p_name));
-	if (p_new_name == p_name) {
-		return;
-	}
-
-	ERR_FAIL_COND(!String(p_new_name).is_valid_identifier());
-
-	ERR_FAIL_COND(functions.has(p_new_name));
-	ERR_FAIL_COND(variables.has(p_new_name));
-	ERR_FAIL_COND(custom_signals.has(p_new_name));
-
-	variables[p_new_name] = variables[p_name];
-	variables.erase(p_name);
-	List<int> ids;
-	get_node_list(&ids);
-	for (int &E : ids) {
-		Ref<VisualScriptVariableGet> nodeget = get_node(E);
-		if (nodeget.is_valid()) {
-			if (nodeget->get_variable() == p_name) {
-				nodeget->set_variable(p_new_name);
-			}
-		} else {
-			Ref<VisualScriptVariableSet> nodeset = get_node(E);
-			if (nodeset.is_valid()) {
-				if (nodeset->get_variable() == p_name) {
-					nodeset->set_variable(p_new_name);
-				}
-			}
-		}
-	}
-}
-
-void VisualScript::add_custom_signal(const StringName &p_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!String(p_name).is_valid_identifier());
-	ERR_FAIL_COND(custom_signals.has(p_name));
-
-	custom_signals[p_name] = Vector<Argument>();
-}
-
-bool VisualScript::has_custom_signal(const StringName &p_name) const {
-	return custom_signals.has(p_name);
-}
-
-void VisualScript::custom_signal_add_argument(const StringName &p_func, Variant::Type p_type, const String &p_name, int p_index) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_func));
-	Argument arg;
-	arg.type = p_type;
-	arg.name = p_name;
-	if (p_index < 0) {
-		custom_signals[p_func].push_back(arg);
-	} else {
-		custom_signals[p_func].insert(0, arg);
-	}
-}
-
-void VisualScript::custom_signal_set_argument_type(const StringName &p_func, int p_argidx, Variant::Type p_type) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_func));
-	ERR_FAIL_INDEX(p_argidx, custom_signals[p_func].size());
-	custom_signals[p_func].write[p_argidx].type = p_type;
-}
-
-Variant::Type VisualScript::custom_signal_get_argument_type(const StringName &p_func, int p_argidx) const {
-	ERR_FAIL_COND_V(!custom_signals.has(p_func), Variant::NIL);
-	ERR_FAIL_INDEX_V(p_argidx, custom_signals[p_func].size(), Variant::NIL);
-	return custom_signals[p_func][p_argidx].type;
-}
-
-void VisualScript::custom_signal_set_argument_name(const StringName &p_func, int p_argidx, const String &p_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_func));
-	ERR_FAIL_INDEX(p_argidx, custom_signals[p_func].size());
-	custom_signals[p_func].write[p_argidx].name = p_name;
-}
-
-String VisualScript::custom_signal_get_argument_name(const StringName &p_func, int p_argidx) const {
-	ERR_FAIL_COND_V(!custom_signals.has(p_func), String());
-	ERR_FAIL_INDEX_V(p_argidx, custom_signals[p_func].size(), String());
-	return custom_signals[p_func][p_argidx].name;
-}
-
-void VisualScript::custom_signal_remove_argument(const StringName &p_func, int p_argidx) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_func));
-	ERR_FAIL_INDEX(p_argidx, custom_signals[p_func].size());
-	custom_signals[p_func].remove_at(p_argidx);
-}
-
-int VisualScript::custom_signal_get_argument_count(const StringName &p_func) const {
-	ERR_FAIL_COND_V(!custom_signals.has(p_func), 0);
-	return custom_signals[p_func].size();
-}
-
-void VisualScript::custom_signal_swap_argument(const StringName &p_func, int p_argidx, int p_with_argidx) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_func));
-	ERR_FAIL_INDEX(p_argidx, custom_signals[p_func].size());
-	ERR_FAIL_INDEX(p_with_argidx, custom_signals[p_func].size());
-
-	SWAP(custom_signals[p_func].write[p_argidx], custom_signals[p_func].write[p_with_argidx]);
-}
-
-void VisualScript::remove_custom_signal(const StringName &p_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_name));
-	custom_signals.erase(p_name);
-}
-
-void VisualScript::rename_custom_signal(const StringName &p_name, const StringName &p_new_name) {
-	ERR_FAIL_COND(instances.size());
-	ERR_FAIL_COND(!custom_signals.has(p_name));
-	if (p_new_name == p_name) {
-		return;
-	}
-
-	ERR_FAIL_COND(!String(p_new_name).is_valid_identifier());
-
-	ERR_FAIL_COND(functions.has(p_new_name));
-	ERR_FAIL_COND(variables.has(p_new_name));
-	ERR_FAIL_COND(custom_signals.has(p_new_name));
-
-	custom_signals[p_new_name] = custom_signals[p_name];
-	custom_signals.erase(p_name);
-}
-
-void VisualScript::get_custom_signal_list(List<StringName> *r_custom_signals) const {
-	for (const KeyValue<StringName, Vector<Argument>> &E : custom_signals) {
-		r_custom_signals->push_back(E.key);
-	}
-
-	r_custom_signals->sort_custom<StringName::AlphCompare>();
-}
-
-int VisualScript::get_available_id() const {
-	// This is infinitely increasing,
-	// so one might want to implement a better solution,
-	// if the there is a case for huge number of nodes to be added to visual script.
-
-	int max = -1;
-	for (const KeyValue<int, NodeData> &E : nodes) {
-		if (E.key > max) {
-			max = E.key;
-		}
-	}
-	return (max + 1);
-}
-
-/////////////////////////////////
-
-bool VisualScript::can_instantiate() const {
-	return true; // ScriptServer::is_scripting_enabled();
-}
-
-StringName VisualScript::get_instance_base_type() const {
-	return base_type;
-}
-
-Ref<Script> VisualScript::get_base_script() const {
-	return Ref<Script>(); // No inheritance in visual script.
-}
-
-#ifdef TOOLS_ENABLED
-void VisualScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {
-	placeholders.erase(p_placeholder);
-}
-
-void VisualScript::_update_placeholders() {
-	if (placeholders.size() == 0) {
-		return; // No bother if no placeholders.
-	}
-	List<PropertyInfo> pinfo;
-	HashMap<StringName, Variant> values;
-
-	for (const KeyValue<StringName, Variable> &E : variables) {
-		if (!variables[E.key]._export) {
-			continue;
-		}
-
-		PropertyInfo p = variables[E.key].info;
-		p.name = String(E.key);
-		pinfo.push_back(p);
-		values[p.name] = variables[E.key].default_value;
-	}
-
-	for (PlaceHolderScriptInstance *E : placeholders) {
-		E->update(pinfo, values);
-	}
-}
-
-#endif
-
-ScriptInstance *VisualScript::instance_create(Object *p_this) {
-#ifdef TOOLS_ENABLED
-
-	if (!ScriptServer::is_scripting_enabled() && !is_tool_script) {
-		PlaceHolderScriptInstance *sins = memnew(PlaceHolderScriptInstance(VisualScriptLanguage::singleton, Ref<Script>((Script *)this), p_this));
-		placeholders.insert(sins);
-
-		List<PropertyInfo> pinfo;
-		HashMap<StringName, Variant> values;
-
-		for (const KeyValue<StringName, Variable> &E : variables) {
-			if (!variables[E.key]._export) {
-				continue;
-			}
-
-			PropertyInfo p = variables[E.key].info;
-			p.name = String(E.key);
-			pinfo.push_back(p);
-			values[p.name] = variables[E.key].default_value;
-		}
-		sins->update(pinfo, values);
-
-		return sins;
-	}
-#endif
-
-	VisualScriptInstance *instance = memnew(VisualScriptInstance);
-	instance->create(Ref<VisualScript>(this), p_this);
-
-	{
-		MutexLock lock(VisualScriptLanguage::singleton->lock);
-
-		instances[p_this] = instance;
-	}
-
-	return instance;
-}
-
-bool VisualScript::instance_has(const Object *p_this) const {
-	return instances.has((Object *)p_this);
-}
-
-bool VisualScript::has_source_code() const {
-	return false;
-}
-
-String VisualScript::get_source_code() const {
-	return String();
-}
-
-void VisualScript::set_source_code(const String &p_code) {
-}
-
-Error VisualScript::reload(bool p_keep_state) {
-	return OK;
-}
-
-bool VisualScript::is_tool() const {
-	return is_tool_script;
-}
-
-bool VisualScript::is_valid() const {
-	return true; // Always valid.
-}
-
-ScriptLanguage *VisualScript::get_language() const {
-	return VisualScriptLanguage::singleton;
-}
-
-bool VisualScript::has_script_signal(const StringName &p_signal) const {
-	return custom_signals.has(p_signal);
-}
-
-void VisualScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
-	for (const KeyValue<StringName, Vector<Argument>> &E : custom_signals) {
-		MethodInfo mi;
-		mi.name = E.key;
-		for (int i = 0; i < E.value.size(); i++) {
-			PropertyInfo arg;
-			arg.type = E.value[i].type;
-			arg.name = E.value[i].name;
-			mi.arguments.push_back(arg);
-		}
-
-		r_signals->push_back(mi);
-	}
-}
-
-bool VisualScript::get_property_default_value(const StringName &p_property, Variant &r_value) const {
-	if (!variables.has(p_property)) {
-		return false;
-	}
-
-	r_value = variables[p_property].default_value;
-	return true;
-}
-
-void VisualScript::get_script_method_list(List<MethodInfo> *p_list) const {
-	for (const KeyValue<StringName, Function> &E : functions) {
-		MethodInfo mi;
-		mi.name = E.key;
-		if (functions[E.key].func_id >= 0) {
-			Ref<VisualScriptFunction> func = nodes[functions[E.key].func_id].node;
-			if (func.is_valid()) {
-				for (int i = 0; i < func->get_argument_count(); i++) {
-					PropertyInfo arg;
-					arg.name = func->get_argument_name(i);
-					arg.type = func->get_argument_type(i);
-					mi.arguments.push_back(arg);
-				}
-
-				p_list->push_back(mi);
-			}
-		}
-	}
-}
-
-bool VisualScript::has_method(const StringName &p_method) const {
-	return functions.has(p_method);
-}
-
-MethodInfo VisualScript::get_method_info(const StringName &p_method) const {
-	const Function funct = functions[p_method];
-	if (funct.func_id == -1) {
-		return MethodInfo();
-	}
-
-	MethodInfo mi;
-	mi.name = p_method;
-	if (funct.func_id >= 0) {
-		Ref<VisualScriptFunction> func = nodes[funct.func_id].node;
-		if (func.is_valid()) {
-			for (int i = 0; i < func->get_argument_count(); i++) {
-				PropertyInfo arg;
-				arg.name = func->get_argument_name(i);
-				arg.type = func->get_argument_type(i);
-				mi.arguments.push_back(arg);
-			}
-
-			if (!func->is_sequenced()) {
-				mi.flags |= METHOD_FLAG_CONST;
-			}
-		}
-	}
-
-	return mi;
-}
-
-void VisualScript::get_script_property_list(List<PropertyInfo> *p_list) const {
-	List<StringName> vars;
-	get_variable_list(&vars);
-
-	for (const StringName &E : vars) {
-		if (!variables[E]._export) {
-			continue;
-		}
-		PropertyInfo pi = variables[E].info;
-		pi.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
-		p_list->push_back(pi);
-	}
-}
-
-int VisualScript::get_member_line(const StringName &p_member) const {
-	return functions[p_member].func_id; // will be -1 if not found
-}
-
-#ifdef TOOLS_ENABLED
-bool VisualScript::are_subnodes_edited() const {
-	for (const KeyValue<int, NodeData> &F : nodes) {
-		if (F.value.node->is_edited()) {
-			return true;
-		}
-	}
-	return false;
-}
-#endif
-
-const Variant VisualScript::get_rpc_config() const {
-	return rpc_functions;
-}
-
-void VisualScript::_set_data(const Dictionary &p_data) {
-	Dictionary d = p_data;
-	if (d.has("base_type")) {
-		base_type = d["base_type"];
-	}
-
-	variables.clear();
-	Array vars = d["variables"];
-	for (int i = 0; i < vars.size(); i++) {
-		Dictionary v = vars[i];
-		StringName name = v["name"];
-		add_variable(name);
-		_set_variable_info(name, v);
-		set_variable_default_value(name, v["default_value"]);
-		set_variable_export(name, v.has("export") && bool(v["export"]));
-	}
-
-	custom_signals.clear();
-	Array sigs = d["signals"];
-	for (int i = 0; i < sigs.size(); i++) {
-		Dictionary cs = sigs[i];
-		add_custom_signal(cs["name"]);
-
-		Array args = cs["arguments"];
-		for (int j = 0; j < args.size(); j += 2) {
-			custom_signal_add_argument(cs["name"], Variant::Type(int(args[j + 1])), args[j]);
-		}
-	}
-
-	Array funcs = d["functions"];
-	functions.clear();
-
-	for (int i = 0; i < funcs.size(); i++) {
-		Dictionary func = funcs[i];
-		add_function(func["name"], func["function_id"]);
-	}
-	{
-		Array nodes = d["nodes"];
-		for (int i = 0; i < nodes.size(); i += 3) {
-			add_node(nodes[i], nodes[i + 2], nodes[i + 1]);
-		}
-
-		Array sequence_connections = d["sequence_connections"];
-		for (int j = 0; j < sequence_connections.size(); j += 3) {
-			sequence_connect(sequence_connections[j + 0], sequence_connections[j + 1], sequence_connections[j + 2]);
-		}
-
-		Array data_connections = d["data_connections"];
-		for (int j = 0; j < data_connections.size(); j += 4) {
-			data_connect(data_connections[j + 0], data_connections[j + 1], data_connections[j + 2], data_connections[j + 3]);
-		}
-	}
-	is_tool_script = d["is_tool_script"];
-	scroll = d["scroll"];
-
-	// Takes all the rpc methods.
-	rpc_functions.clear();
-	for (const KeyValue<StringName, Function> &E : functions) {
-		if (E.value.func_id >= 0 && nodes.has(E.value.func_id)) {
-			Ref<VisualScriptFunction> vsf = nodes[E.value.func_id].node;
-			if (!vsf.is_valid() || vsf->get_rpc_mode() == MultiplayerAPI::RPC_MODE_DISABLED) {
-				continue;
-			}
-			Dictionary nd;
-			nd["rpc_mode"] = vsf->get_rpc_mode();
-			nd["transfer_mode"] = MultiplayerPeer::TRANSFER_MODE_RELIABLE; // TODO
-			nd["call_local"] = false; // TODO
-			rpc_functions[E.key] = nd;
-		}
-	}
-}
-
-Dictionary VisualScript::_get_data() const {
-	Dictionary d;
-	d["base_type"] = base_type;
-
-	Array vars;
-	for (const KeyValue<StringName, Variable> &E : variables) {
-		Dictionary var = _get_variable_info(E.key);
-		var["name"] = E.key; // Make sure it's the right one.
-		var["default_value"] = E.value.default_value;
-		var["export"] = E.value._export;
-		vars.push_back(var);
-	}
-	d["variables"] = vars;
-
-	Array sigs;
-	for (const KeyValue<StringName, Vector<Argument>> &E : custom_signals) {
-		Dictionary cs;
-		cs["name"] = E.key;
-		Array args;
-		for (int i = 0; i < E.value.size(); i++) {
-			args.push_back(E.value[i].name);
-			args.push_back(E.value[i].type);
-		}
-		cs["arguments"] = args;
-
-		sigs.push_back(cs);
-	}
-
-	d["signals"] = sigs;
-
-	Array funcs;
-	for (const KeyValue<StringName, Function> &E : functions) {
-		Dictionary func;
-		func["name"] = E.key;
-		func["function_id"] = E.value.func_id;
-		funcs.push_back(func);
-	}
-	d["functions"] = funcs;
-
-	Array nds;
-	for (const KeyValue<int, NodeData> &F : nodes) {
-		nds.push_back(F.key);
-		nds.push_back(F.value.pos);
-		nds.push_back(F.value.node);
-	}
-	d["nodes"] = nds;
-
-	Array seqconns;
-	for (const SequenceConnection &F : sequence_connections) {
-		seqconns.push_back(F.from_node);
-		seqconns.push_back(F.from_output);
-		seqconns.push_back(F.to_node);
-	}
-	d["sequence_connections"] = seqconns;
-
-	Array dataconns;
-	for (const DataConnection &F : data_connections) {
-		dataconns.push_back(F.from_node);
-		dataconns.push_back(F.from_port);
-		dataconns.push_back(F.to_node);
-		dataconns.push_back(F.to_port);
-	}
-	d["data_connections"] = dataconns;
-
-	d["is_tool_script"] = is_tool_script;
-	d["scroll"] = scroll;
-
-	return d;
-}
-
-void VisualScript::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("add_function", "name", "func_node_id"), &VisualScript::add_function);
-	ClassDB::bind_method(D_METHOD("has_function", "name"), &VisualScript::has_function);
-	ClassDB::bind_method(D_METHOD("remove_function", "name"), &VisualScript::remove_function);
-	ClassDB::bind_method(D_METHOD("rename_function", "name", "new_name"), &VisualScript::rename_function);
-	ClassDB::bind_method(D_METHOD("set_scroll", "offset"), &VisualScript::set_scroll);
-	ClassDB::bind_method(D_METHOD("get_scroll"), &VisualScript::get_scroll);
-
-	ClassDB::bind_method(D_METHOD("add_node", "id", "node", "position"), &VisualScript::add_node, DEFVAL(Point2()));
-	ClassDB::bind_method(D_METHOD("remove_node", "id"), &VisualScript::remove_node);
-	ClassDB::bind_method(D_METHOD("get_function_node_id", "name"), &VisualScript::get_function_node_id);
-
-	ClassDB::bind_method(D_METHOD("get_node", "id"), &VisualScript::get_node);
-	ClassDB::bind_method(D_METHOD("has_node", "id"), &VisualScript::has_node);
-	ClassDB::bind_method(D_METHOD("set_node_position", "id", "position"), &VisualScript::set_node_position);
-	ClassDB::bind_method(D_METHOD("get_node_position", "id"), &VisualScript::get_node_position);
-
-	ClassDB::bind_method(D_METHOD("sequence_connect", "from_node", "from_output", "to_node"), &VisualScript::sequence_connect);
-	ClassDB::bind_method(D_METHOD("sequence_disconnect", "from_node", "from_output", "to_node"), &VisualScript::sequence_disconnect);
-	ClassDB::bind_method(D_METHOD("has_sequence_connection", "from_node", "from_output", "to_node"), &VisualScript::has_sequence_connection);
-
-	ClassDB::bind_method(D_METHOD("data_connect", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_connect);
-	ClassDB::bind_method(D_METHOD("data_disconnect", "from_node", "from_port", "to_node", "to_port"), &VisualScript::data_disconnect);
-	ClassDB::bind_method(D_METHOD("has_data_connection", "from_node", "from_port", "to_node", "to_port"), &VisualScript::has_data_connection);
-
-	ClassDB::bind_method(D_METHOD("add_variable", "name", "default_value", "export"), &VisualScript::add_variable, DEFVAL(Variant()), DEFVAL(false));
-	ClassDB::bind_method(D_METHOD("has_variable", "name"), &VisualScript::has_variable);
-	ClassDB::bind_method(D_METHOD("remove_variable", "name"), &VisualScript::remove_variable);
-	ClassDB::bind_method(D_METHOD("set_variable_default_value", "name", "value"), &VisualScript::set_variable_default_value);
-	ClassDB::bind_method(D_METHOD("get_variable_default_value", "name"), &VisualScript::get_variable_default_value);
-	ClassDB::bind_method(D_METHOD("set_variable_info", "name", "value"), &VisualScript::_set_variable_info);
-	ClassDB::bind_method(D_METHOD("get_variable_info", "name"), &VisualScript::_get_variable_info);
-	ClassDB::bind_method(D_METHOD("set_variable_export", "name", "enable"), &VisualScript::set_variable_export);
-	ClassDB::bind_method(D_METHOD("get_variable_export", "name"), &VisualScript::get_variable_export);
-	ClassDB::bind_method(D_METHOD("rename_variable", "name", "new_name"), &VisualScript::rename_variable);
-
-	ClassDB::bind_method(D_METHOD("add_custom_signal", "name"), &VisualScript::add_custom_signal);
-	ClassDB::bind_method(D_METHOD("has_custom_signal", "name"), &VisualScript::has_custom_signal);
-	ClassDB::bind_method(D_METHOD("custom_signal_add_argument", "name", "type", "argname", "index"), &VisualScript::custom_signal_add_argument, DEFVAL(-1));
-	ClassDB::bind_method(D_METHOD("custom_signal_set_argument_type", "name", "argidx", "type"), &VisualScript::custom_signal_set_argument_type);
-	ClassDB::bind_method(D_METHOD("custom_signal_get_argument_type", "name", "argidx"), &VisualScript::custom_signal_get_argument_type);
-	ClassDB::bind_method(D_METHOD("custom_signal_set_argument_name", "name", "argidx", "argname"), &VisualScript::custom_signal_set_argument_name);
-	ClassDB::bind_method(D_METHOD("custom_signal_get_argument_name", "name", "argidx"), &VisualScript::custom_signal_get_argument_name);
-	ClassDB::bind_method(D_METHOD("custom_signal_remove_argument", "name", "argidx"), &VisualScript::custom_signal_remove_argument);
-	ClassDB::bind_method(D_METHOD("custom_signal_get_argument_count", "name"), &VisualScript::custom_signal_get_argument_count);
-	ClassDB::bind_method(D_METHOD("custom_signal_swap_argument", "name", "argidx", "withidx"), &VisualScript::custom_signal_swap_argument);
-	ClassDB::bind_method(D_METHOD("remove_custom_signal", "name"), &VisualScript::remove_custom_signal);
-	ClassDB::bind_method(D_METHOD("rename_custom_signal", "name", "new_name"), &VisualScript::rename_custom_signal);
-
-	ClassDB::bind_method(D_METHOD("set_instance_base_type", "type"), &VisualScript::set_instance_base_type);
-
-	ClassDB::bind_method(D_METHOD("_set_data", "data"), &VisualScript::_set_data);
-	ClassDB::bind_method(D_METHOD("_get_data"), &VisualScript::_get_data);
-
-	ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR | PROPERTY_USAGE_INTERNAL), "_set_data", "_get_data");
-
-	ADD_SIGNAL(MethodInfo("node_ports_changed", PropertyInfo(Variant::INT, "id")));
-}
-
-VisualScript::VisualScript() {
-	base_type = "Object";
-	is_tool_script = false;
-}
-
-bool VisualScript::inherits_script(const Ref<Script> &p_script) const {
-	return this == p_script.ptr(); // There is no inheritance in visual scripts, so this is enough.
-}
-
-RBSet<int> VisualScript::get_output_sequence_ports_connected(int from_node) {
-	List<VisualScript::SequenceConnection> *sc = memnew(List<VisualScript::SequenceConnection>);
-	get_sequence_connection_list(sc);
-	RBSet<int> connected;
-	for (List<VisualScript::SequenceConnection>::Element *E = sc->front(); E; E = E->next()) {
-		if (E->get().from_node == from_node) {
-			connected.insert(E->get().from_output);
-		}
-	}
-	memdelete(sc);
-	return connected;
-}
-
-VisualScript::~VisualScript() {
-	// Remove all nodes and stuff that hold data refs.
-	for (const KeyValue<int, NodeData> &E : nodes) {
-		remove_node(E.key);
-	}
-}
-
-////////////////////////////////////////////
-
-bool VisualScriptInstance::set(const StringName &p_name, const Variant &p_value) {
-	HashMap<StringName, Variant>::Iterator E = variables.find(p_name);
-	if (!E) {
-		return false;
-	}
-
-	E->value = p_value;
-
-	return true;
-}
-
-bool VisualScriptInstance::get(const StringName &p_name, Variant &r_ret) const {
-	HashMap<StringName, Variant>::ConstIterator E = variables.find(p_name);
-	if (!E) {
-		return false;
-	}
-
-	r_ret = E->value;
-	return true;
-}
-
-void VisualScriptInstance::get_property_list(List<PropertyInfo> *p_properties) const {
-#ifdef TOOLS_ENABLED
-	p_properties->push_back(script->get_class_category());
-#endif // TOOLS_ENABLED
-
-	for (const KeyValue<StringName, VisualScript::Variable> &E : script->variables) {
-		if (!E.value._export) {
-			continue;
-		}
-		PropertyInfo p = E.value.info;
-		p.name = String(E.key);
-		p.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE;
-		p_properties->push_back(p);
-	}
-}
-
-Variant::Type VisualScriptInstance::get_property_type(const StringName &p_name, bool *r_is_valid) const {
-	if (!script->variables.has(p_name)) {
-		if (r_is_valid) {
-			*r_is_valid = false;
-		}
-		ERR_FAIL_V(Variant::NIL);
-	}
-
-	if (r_is_valid) {
-		*r_is_valid = true;
-	}
-
-	return script->variables[p_name].info.type;
-}
-
-void VisualScriptInstance::get_method_list(List<MethodInfo> *p_list) const {
-	for (const KeyValue<StringName, VisualScript::Function> &E : script->functions) {
-		MethodInfo mi;
-		mi.name = E.key;
-		if (E.value.func_id >= 0 && script->nodes.has(E.value.func_id)) {
-			Ref<VisualScriptFunction> vsf = script->nodes[E.value.func_id].node;
-			if (vsf.is_valid()) {
-				for (int i = 0; i < vsf->get_argument_count(); i++) {
-					PropertyInfo arg;
-					arg.name = vsf->get_argument_name(i);
-					arg.type = vsf->get_argument_type(i);
-
-					mi.arguments.push_back(arg);
-				}
-
-				if (!vsf->is_sequenced()) { // Assumed constant if not sequenced.
-					mi.flags |= METHOD_FLAG_CONST;
-				}
-			}
-		}
-		p_list->push_back(mi);
-	}
-}
-
-bool VisualScriptInstance::has_method(const StringName &p_method) const {
-	return script->functions.has(p_method);
-}
-
-//#define VSDEBUG(m_text) print_line(m_text)
-#define VSDEBUG(m_text)
-
-void VisualScriptInstance::_dependency_step(VisualScriptNodeInstance *node, int p_pass, int *pass_stack, const Variant **input_args, Variant **output_args, Variant *variant_stack, Callable::CallError &r_error, String &error_str, VisualScriptNodeInstance **r_error_node) {
-	ERR_FAIL_COND(node->pass_idx == -1);
-
-	if (pass_stack[node->pass_idx] == p_pass) {
-		return;
-	}
-
-	pass_stack[node->pass_idx] = p_pass;
-
-	if (!node->dependencies.is_empty()) {
-		int dc = node->dependencies.size();
-		VisualScriptNodeInstance **deps = node->dependencies.ptrw();
-
-		for (int i = 0; i < dc; i++) {
-			_dependency_step(deps[i], p_pass, pass_stack, input_args, output_args, variant_stack, r_error, error_str, r_error_node);
-			if (r_error.error != Callable::CallError::CALL_OK) {
-				return;
-			}
-		}
-	}
-
-	for (int i = 0; i < node->input_port_count; i++) {
-		int index = node->input_ports[i] & VisualScriptNodeInstance::INPUT_MASK;
-
-		if (node->input_ports[i] & VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT) {
-			// Is a default value (unassigned input port).
-			input_args[i] = &default_values[index];
-		} else {
-			// Regular temporary in stack.
-			input_args[i] = &variant_stack[index];
-		}
-	}
-	for (int i = 0; i < node->output_port_count; i++) {
-		output_args[i] = &variant_stack[node->output_ports[i]];
-	}
-
-	Variant *working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)nullptr;
-
-	node->step(input_args, output_args, VisualScriptNodeInstance::START_MODE_BEGIN_SEQUENCE, working_mem, r_error, error_str);
-	// Ignore return.
-	if (r_error.error != Callable::CallError::CALL_OK) {
-		*r_error_node = node;
-	}
-}
-
-Variant VisualScriptInstance::_call_internal(const StringName &p_method, void *p_stack, int p_stack_size, VisualScriptNodeInstance *p_node, int p_flow_stack_pos, int p_pass, bool p_resuming_yield, Callable::CallError &r_error) {
-	HashMap<StringName, Function>::Iterator F = functions.find(p_method);
-	ERR_FAIL_COND_V(!F, Variant());
-	Function *f = &F->value;
-
-	// This call goes separate, so it can be yielded and suspended.
-	Variant *variant_stack = (Variant *)p_stack;
-	bool *sequence_bits = (bool *)(variant_stack + f->max_stack);
-	const Variant **input_args = (const Variant **)(sequence_bits + f->node_count);
-	Variant **output_args = (Variant **)(input_args + max_input_args);
-	int flow_max = f->flow_stack_size;
-	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)nullptr;
-	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)nullptr;
-
-	String error_str;
-
-	VisualScriptNodeInstance *node = p_node;
-	bool error = false;
-	int current_node_id = f->node;
-	Variant return_value;
-	Variant *working_mem = nullptr;
-
-	int flow_stack_pos = p_flow_stack_pos;
-
-#ifdef DEBUG_ENABLED
-	if (EngineDebugger::is_active()) {
-		VisualScriptLanguage::singleton->enter_function(this, &p_method, variant_stack, &working_mem, &current_node_id);
-	}
-#endif
-
-	while (true) {
-		p_pass++; // Increment pass.
-		current_node_id = node->get_id();
-
-		VSDEBUG("==========AT NODE: " + itos(current_node_id) + " base: " + node->get_base_node()->get_class_name());
-		VSDEBUG("AT STACK POS: " + itos(flow_stack_pos));
-
-		// Setup working mem.
-		working_mem = node->working_mem_idx >= 0 ? &variant_stack[node->working_mem_idx] : (Variant *)nullptr;
-
-		VSDEBUG("WORKING MEM: " + itos(node->working_mem_idx));
-
-		if (current_node_id == f->node) {
-			// If function node, set up function arguments from beginning of stack.
-
-			for (int i = 0; i < f->argument_count; i++) {
-				input_args[i] = &variant_stack[i];
-			}
-		} else {
-			// Run dependencies first.
-
-			if (!node->dependencies.is_empty()) {
-				int dc = node->dependencies.size();
-				VisualScriptNodeInstance **deps = node->dependencies.ptrw();
-
-				for (int i = 0; i < dc; i++) {
-					_dependency_step(deps[i], p_pass, pass_stack, input_args, output_args, variant_stack, r_error, error_str, &node);
-					if (r_error.error != Callable::CallError::CALL_OK) {
-						error = true;
-						current_node_id = node->id;
-						break;
-					}
-				}
-			}
-
-			if (!error) {
-				// Setup input pointers normally.
-				VSDEBUG("INPUT PORTS: " + itos(node->input_port_count));
-
-				for (int i = 0; i < node->input_port_count; i++) {
-					int index = node->input_ports[i] & VisualScriptNodeInstance::INPUT_MASK;
-
-					if (node->input_ports[i] & VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT) {
-						// Is a default value (unassigned input port).
-						input_args[i] = &default_values[index];
-						VSDEBUG("\tPORT " + itos(i) + " DEFAULT VAL");
-					} else {
-						// Regular temporary in stack.
-						input_args[i] = &variant_stack[index];
-						VSDEBUG("PORT " + itos(i) + " AT STACK " + itos(index));
-					}
-				}
-			}
-		}
-
-		if (error) {
-			break;
-		}
-
-		// Setup output pointers.
-
-		VSDEBUG("OUTPUT PORTS: " + itos(node->output_port_count));
-		for (int i = 0; i < node->output_port_count; i++) {
-			output_args[i] = &variant_stack[node->output_ports[i]];
-			VSDEBUG("PORT " + itos(i) + " AT STACK " + itos(node->output_ports[i]));
-		}
-
-		// Do step.
-
-		VisualScriptNodeInstance::StartMode start_mode;
-		{
-			if (p_resuming_yield) {
-				start_mode = VisualScriptNodeInstance::START_MODE_RESUME_YIELD;
-				p_resuming_yield = false; // Should resume only the first time.
-			} else if (flow_stack && (flow_stack[flow_stack_pos] & VisualScriptNodeInstance::FLOW_STACK_PUSHED_BIT)) {
-				// If there is a push bit, it means we are continuing a sequence.
-				start_mode = VisualScriptNodeInstance::START_MODE_CONTINUE_SEQUENCE;
-			} else {
-				start_mode = VisualScriptNodeInstance::START_MODE_BEGIN_SEQUENCE;
-			}
-		}
-
-		VSDEBUG("STEP - STARTSEQ: " + itos(start_mode));
-
-		int ret = node->step(input_args, output_args, start_mode, working_mem, r_error, error_str);
-
-		if (r_error.error != Callable::CallError::CALL_OK) {
-			// Use error from step.
-			error = true;
-			break;
-		}
-
-		if (ret & VisualScriptNodeInstance::STEP_YIELD_BIT) {
-			// Yielded!
-			if (node->get_working_memory_size() == 0) {
-				r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-				error_str = RTR("A node yielded without working memory, please read the docs on how to yield properly!");
-				error = true;
-				break;
-
-			} else {
-				Ref<VisualScriptFunctionState> state = *working_mem;
-				if (!state.is_valid()) {
-					r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-					error_str = RTR("Node yielded, but did not return a function state in the first working memory.");
-					error = true;
-					break;
-				}
-
-				// Step 1, capture all state.
-				state->instance_id = get_owner_ptr()->get_instance_id();
-				state->script_id = get_script()->get_instance_id();
-				state->instance = this;
-				state->function = p_method;
-				state->working_mem_index = node->working_mem_idx;
-				state->variant_stack_size = f->max_stack;
-				state->node = node;
-				state->flow_stack_pos = flow_stack_pos;
-				state->stack.resize(p_stack_size);
-				state->pass = p_pass;
-				memcpy(state->stack.ptrw(), p_stack, p_stack_size);
-				// Step 2, run away, return directly.
-				r_error.error = Callable::CallError::CALL_OK;
-
-#ifdef DEBUG_ENABLED
-				// Will re-enter later, so exiting.
-				if (EngineDebugger::is_active()) {
-					VisualScriptLanguage::singleton->exit_function();
-				}
-#endif
-
-				return state;
-			}
-		}
-
-#ifdef DEBUG_ENABLED
-		if (EngineDebugger::is_active()) {
-			// line
-			bool do_break = false;
-
-			if (EngineDebugger::get_script_debugger()->get_lines_left() > 0) {
-				if (EngineDebugger::get_script_debugger()->get_depth() <= 0) {
-					EngineDebugger::get_script_debugger()->set_lines_left(EngineDebugger::get_script_debugger()->get_lines_left() - 1);
-				}
-				if (EngineDebugger::get_script_debugger()->get_lines_left() <= 0) {
-					do_break = true;
-				}
-			}
-
-			if (EngineDebugger::get_script_debugger()->is_breakpoint(current_node_id, source)) {
-				do_break = true;
-			}
-
-			if (do_break) {
-				VisualScriptLanguage::singleton->debug_break("Breakpoint", true);
-			}
-
-			EngineDebugger::get_singleton()->line_poll();
-		}
-#endif
-		int output = ret & VisualScriptNodeInstance::STEP_MASK;
-
-		VSDEBUG("STEP RETURN: " + itos(ret));
-
-		if (ret & VisualScriptNodeInstance::STEP_EXIT_FUNCTION_BIT) {
-			if (node->get_working_memory_size() == 0) {
-				r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-				error_str = RTR("Return value must be assigned to first element of node working memory! Fix your node please.");
-				error = true;
-			} else {
-				// Assign from working memory, first element.
-				return_value = *working_mem;
-			}
-
-			VSDEBUG("EXITING FUNCTION - VALUE " + String(return_value));
-			break; // Exit function requested, bye
-		}
-
-		VisualScriptNodeInstance *next = nullptr; // Next node.
-
-		if ((ret == output || ret & VisualScriptNodeInstance::STEP_FLAG_PUSH_STACK_BIT) && node->sequence_output_count) {
-			// If no exit bit was set, and has sequence outputs, guess next node.
-			if (output >= node->sequence_output_count) {
-				r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-				error_str = RTR("Node returned an invalid sequence output:") + " " + itos(output);
-				error = true;
-				break;
-			}
-
-			next = node->sequence_outputs[output];
-			VSDEBUG("GOT NEXT NODE - " + (next ? itos(next->get_id()) : "Null"));
-		}
-
-		if (flow_stack) {
-			// Update flow stack pos (may have changed).
-			flow_stack[flow_stack_pos] = current_node_id;
-
-			// Add stack push bit if requested.
-			if (ret & VisualScriptNodeInstance::STEP_FLAG_PUSH_STACK_BIT) {
-				flow_stack[flow_stack_pos] |= VisualScriptNodeInstance::FLOW_STACK_PUSHED_BIT;
-				sequence_bits[node->sequence_index] = true; // Remember sequence bit.
-				VSDEBUG("NEXT SEQ - FLAG BIT");
-			} else {
-				sequence_bits[node->sequence_index] = false; // Forget sequence bit.
-				VSDEBUG("NEXT SEQ - NORMAL");
-			}
-
-			if (ret & VisualScriptNodeInstance::STEP_FLAG_GO_BACK_BIT) {
-				// Go back request.
-
-				if (flow_stack_pos > 0) {
-					flow_stack_pos--;
-					node = instances[flow_stack[flow_stack_pos] & VisualScriptNodeInstance::FLOW_STACK_MASK];
-					VSDEBUG("NEXT IS GO BACK");
-				} else {
-					VSDEBUG("NEXT IS GO BACK, BUT NO NEXT SO EXIT");
-					break; // Simply exit without value or error.
-				}
-			} else if (next) {
-				if (sequence_bits[next->sequence_index]) {
-					// What happened here is that we are entering a node that is in the middle of doing a sequence (pushed stack) from the front
-					// because each node has a working memory, we can't really do a sub-sequence
-					// as a result, the sequence will be restarted and the stack will roll back to find where this node
-					// started the sequence.
-
-					bool found = false;
-
-					for (int i = flow_stack_pos; i >= 0; i--) {
-						if ((flow_stack[i] & VisualScriptNodeInstance::FLOW_STACK_MASK) == next->get_id()) {
-							flow_stack_pos = i; // Roll back and remove bit.
-							flow_stack[i] = next->get_id();
-							sequence_bits[next->sequence_index] = false;
-							found = true;
-						}
-					}
-
-					if (!found) {
-						r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-						error_str = RTR("Found sequence bit but not the node in the stack (please report).");
-						error = true;
-						break;
-					}
-
-					node = next;
-					VSDEBUG("RE-ENTERED A LOOP, RETURNED STACK POS TO - " + itos(flow_stack_pos));
-
-				} else {
-					// Check for stack overflow.
-					if (flow_stack_pos + 1 >= flow_max) {
-						r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-						error_str = vformat(RTR("Stack overflow (stack size: %s). Check for infinite recursion in your script."), output);
-						error = true;
-						break;
-					}
-
-					node = next;
-
-					flow_stack_pos++;
-					flow_stack[flow_stack_pos] = node->get_id();
-
-					VSDEBUG("INCREASE FLOW STACK");
-				}
-
-			} else {
-				// No next node, try to go back in stack to pushed bit.
-
-				bool found = false;
-
-				for (int i = flow_stack_pos; i >= 0; i--) {
-					VSDEBUG("FS " + itos(i) + " - " + itos(flow_stack[i]));
-					if (flow_stack[i] & VisualScriptNodeInstance::FLOW_STACK_PUSHED_BIT) {
-						node = instances[flow_stack[i] & VisualScriptNodeInstance::FLOW_STACK_MASK];
-						flow_stack_pos = i;
-						found = true;
-						break;
-					}
-				}
-
-				if (!found) {
-					VSDEBUG("NO NEXT NODE, NO GO BACK, EXITING");
-					break; // Done, couldn't find a push stack bit.
-				}
-
-				VSDEBUG("NO NEXT NODE, GO BACK TO: " + itos(flow_stack_pos));
-			}
-		} else {
-			node = next; // Stackless mode, simply assign next node.
-		}
-	}
-
-	if (error) {
-		// Error
-		// Function, file, line, error, explanation.
-		String err_file = script->get_path();
-		String err_func = p_method;
-		int err_line = current_node_id; // Not a line but it works as one.
-
-		if (node && (r_error.error != Callable::CallError::CALL_ERROR_INVALID_METHOD || error_str.is_empty())) {
-			if (!error_str.is_empty()) {
-				error_str += " ";
-			}
-
-			if (r_error.error == Callable::CallError::CALL_ERROR_INVALID_ARGUMENT) {
-				int errorarg = r_error.argument;
-				error_str += "Cannot convert argument " + itos(errorarg + 1) + " to " + Variant::get_type_name(Variant::Type(r_error.expected)) + ".";
-			} else if (r_error.error == Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS) {
-				error_str += "Expected " + itos(r_error.argument) + " arguments.";
-			} else if (r_error.error == Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS) {
-				error_str += "Expected " + itos(r_error.argument) + " arguments.";
-			} else if (r_error.error == Callable::CallError::CALL_ERROR_INVALID_METHOD) {
-				error_str += "Invalid Call.";
-			} else if (r_error.error == Callable::CallError::CALL_ERROR_METHOD_NOT_CONST) {
-				error_str += "Method not const in a const instance.";
-			} else if (r_error.error == Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL) {
-				error_str += "Base Instance is null";
-			}
-		}
-
-		//if (!GDScriptLanguage::get_singleton()->debug_break(err_text,false)) {
-		// debugger break did not happen
-
-		if (!VisualScriptLanguage::singleton->debug_break(error_str, false)) {
-			_err_print_error(err_func.utf8().get_data(), err_file.utf8().get_data(), err_line, error_str.utf8().get_data(), false, ERR_HANDLER_SCRIPT);
-		}
-
-		//}
-	} else {
-		//return_value=
-	}
-
-#ifdef DEBUG_ENABLED
-	if (EngineDebugger::is_active()) {
-		VisualScriptLanguage::singleton->exit_function();
-	}
-#endif
-
-	// Clean up variant stack.
-	for (int i = 0; i < f->max_stack; i++) {
-		variant_stack[i].~Variant();
-	}
-
-	return return_value;
-}
-
-Variant VisualScriptInstance::callp(const StringName &p_method, const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
-	r_error.error = Callable::CallError::CALL_OK; //ok by default
-
-	HashMap<StringName, Function>::Iterator F = functions.find(p_method);
-	if (!F) {
-		r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-		return Variant();
-	}
-
-	VSDEBUG("CALLING: " + String(p_method));
-
-	Function *f = &F->value;
-
-	int total_stack_size = 0;
-
-	total_stack_size += f->max_stack * sizeof(Variant); //variants
-	total_stack_size += f->node_count * sizeof(bool);
-	total_stack_size += (max_input_args + max_output_args) * sizeof(Variant *); //arguments
-	total_stack_size += f->flow_stack_size * sizeof(int); //flow
-	total_stack_size += f->pass_stack_size * sizeof(int);
-
-	VSDEBUG("STACK SIZE: " + itos(total_stack_size));
-	VSDEBUG("STACK VARIANTS: : " + itos(f->max_stack));
-	VSDEBUG("SEQBITS: : " + itos(f->node_count));
-	VSDEBUG("MAX INPUT: " + itos(max_input_args));
-	VSDEBUG("MAX OUTPUT: " + itos(max_output_args));
-	VSDEBUG("FLOW STACK SIZE: " + itos(f->flow_stack_size));
-	VSDEBUG("PASS STACK SIZE: " + itos(f->pass_stack_size));
-
-	void *stack = alloca(total_stack_size);
-
-	Variant *variant_stack = (Variant *)stack;
-	bool *sequence_bits = (bool *)(variant_stack + f->max_stack);
-	const Variant **input_args = (const Variant **)(sequence_bits + f->node_count);
-	Variant **output_args = (Variant **)(input_args + max_input_args);
-	int flow_max = f->flow_stack_size;
-	int *flow_stack = flow_max ? (int *)(output_args + max_output_args) : (int *)nullptr;
-	int *pass_stack = flow_stack ? (int *)(flow_stack + flow_max) : (int *)nullptr;
-
-	for (int i = 0; i < f->node_count; i++) {
-		sequence_bits[i] = false; // All starts as false.
-	}
-
-	memset(pass_stack, 0, f->pass_stack_size * sizeof(int));
-
-	HashMap<int, VisualScriptNodeInstance *>::Iterator E = instances.find(f->node);
-	if (!E) {
-		r_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD;
-
-		ERR_FAIL_V_MSG(Variant(), "No VisualScriptFunction node in function.");
-	}
-
-	VisualScriptNodeInstance *node = E->value;
-
-	if (flow_stack) {
-		flow_stack[0] = node->get_id();
-	}
-
-	VSDEBUG("ARGUMENTS: " + itos(f->argument_count) = " RECEIVED: " + itos(p_argcount));
-
-	if (p_argcount < f->argument_count) {
-		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
-		r_error.argument = node->get_input_port_count();
-
-		return Variant();
-	}
-
-	if (p_argcount > f->argument_count) {
-		r_error.error = Callable::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
-		r_error.argument = node->get_input_port_count();
-
-		return Variant();
-	}
-
-	// Allocate variant stack.
-	for (int i = 0; i < f->max_stack; i++) {
-		memnew_placement(&variant_stack[i], Variant);
-	}
-
-	// Allocate function arguments (must be copied for yield to work properly).
-	for (int i = 0; i < p_argcount; i++) {
-		variant_stack[i] = *p_args[i];
-	}
-
-	return _call_internal(p_method, stack, total_stack_size, node, 0, 0, false, r_error);
-}
-
-void VisualScriptInstance::notification(int p_notification) {
-	// Do nothing as this is called using virtual.
-
-	Variant what = p_notification;
-	const Variant *whatp = &what;
-	Callable::CallError ce;
-	callp(VisualScriptLanguage::singleton->notification, &whatp, 1, ce); // Do as call.
-}
-
-String VisualScriptInstance::to_string(bool *r_valid) {
-	if (has_method(CoreStringNames::get_singleton()->_to_string)) {
-		Callable::CallError ce;
-		Variant ret = callp(CoreStringNames::get_singleton()->_to_string, nullptr, 0, ce);
-		if (ce.error == Callable::CallError::CALL_OK) {
-			if (ret.get_type() != Variant::STRING) {
-				if (r_valid) {
-					*r_valid = false;
-				}
-				ERR_FAIL_V_MSG(String(), "Wrong type for " + CoreStringNames::get_singleton()->_to_string + ", must be a String.");
-			}
-			if (r_valid) {
-				*r_valid = true;
-			}
-			return ret.operator String();
-		}
-	}
-	if (r_valid) {
-		*r_valid = false;
-	}
-	return String();
-}
-
-Ref<Script> VisualScriptInstance::get_script() const {
-	return script;
-}
-
-const Variant VisualScriptInstance::get_rpc_config() const {
-	return script->get_rpc_config();
-}
-
-void VisualScriptInstance::create(const Ref<VisualScript> &p_script, Object *p_owner) {
-	script = p_script;
-	owner = p_owner;
-	source = p_script->get_path();
-
-	max_input_args = 0;
-	max_output_args = 0;
-
-	// Setup variables.
-	{
-		for (const KeyValue<StringName, VisualScript::Variable> &E : script->variables) {
-			variables[E.key] = E.value.default_value;
-		}
-	}
-
-	// Setup functions from sequence trees.
-	{
-		for (const KeyValue<StringName, VisualScript::Function> &E : script->functions) {
-			const VisualScript::Function &vsfn = E.value;
-			Function function;
-			function.node = vsfn.func_id;
-			function.max_stack = 0;
-			function.flow_stack_size = 0;
-			function.pass_stack_size = 0;
-			function.node_count = 0;
-
-			HashMap<StringName, int> local_var_indices;
-
-			if (function.node < 0) {
-				VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No start node in function: " + String(E.key));
-				ERR_CONTINUE(function.node < 0);
-			}
-
-			{
-				Ref<VisualScriptFunction> func_node = script->get_node(vsfn.func_id);
-
-				if (func_node.is_null()) {
-					VisualScriptLanguage::singleton->debug_break_parse(get_script()->get_path(), 0, "No VisualScriptFunction typed start node in function: " + String(E.key));
-				}
-
-				ERR_CONTINUE(!func_node.is_valid());
-
-				function.argument_count = func_node->get_argument_count();
-				function.max_stack += function.argument_count;
-				function.flow_stack_size = func_node->is_stack_less() ? 0 : func_node->get_stack_size();
-				max_input_args = MAX(max_input_args, function.argument_count);
-			}
-			// Function nodes graphs.
-			RBSet<VisualScript::SequenceConnection> seqconns;
-			RBSet<VisualScript::DataConnection> dataconns;
-			RBSet<int> node_ids;
-			node_ids.insert(function.node);
-			{
-				List<int> nd_queue;
-				nd_queue.push_back(function.node);
-				while (!nd_queue.is_empty()) {
-					for (const VisualScript::SequenceConnection &F : script->sequence_connections) {
-						if (nd_queue.front()->get() == F.from_node && !node_ids.has(F.to_node)) {
-							nd_queue.push_back(F.to_node);
-							node_ids.insert(F.to_node);
-						}
-						if (nd_queue.front()->get() == F.from_node && !seqconns.has(F)) {
-							seqconns.insert(F);
-						}
-					}
-					nd_queue.pop_front();
-				}
-				HashMap<int, HashMap<int, Pair<int, int>>> dc_lut; // :: to -> to_port -> (from, from_port)
-				for (const VisualScript::DataConnection &F : script->data_connections) {
-					dc_lut[F.to_node][F.to_port] = Pair<int, int>(F.from_node, F.from_port);
-				}
-				for (const int &F : node_ids) {
-					nd_queue.push_back(F);
-				}
-				List<int> dc_keys;
-				while (!nd_queue.is_empty()) {
-					int ky = nd_queue.front()->get();
-					for (const KeyValue<int, Pair<int, int>> &F : dc_lut[ky]) {
-						VisualScript::DataConnection dc;
-						dc.from_node = F.value.first;
-						dc.from_port = F.value.second;
-						dc.to_node = ky;
-						dc.to_port = F.key;
-						dataconns.insert(dc);
-						nd_queue.push_back(dc.from_node);
-						node_ids.insert(dc.from_node);
-					}
-					dc_keys.clear(); // Necessary as get_key_list does a push_back not a set.
-					nd_queue.pop_front();
-				}
-			}
-
-			//Multiple passes are required to set up this complex thing..
-			//First create the nodes.
-			for (const int &F : node_ids) {
-				Ref<VisualScriptNode> node = script->nodes[F].node;
-
-				VisualScriptNodeInstance *instance = node->instantiate(this); // Create instance.
-				ERR_FAIL_COND(!instance);
-
-				instance->base = node.ptr();
-
-				instance->id = F;
-				instance->input_port_count = node->get_input_value_port_count();
-				instance->input_ports = nullptr;
-				instance->output_port_count = node->get_output_value_port_count();
-				instance->output_ports = nullptr;
-				instance->sequence_output_count = node->get_output_sequence_port_count();
-				instance->sequence_index = function.node_count++;
-				instance->sequence_outputs = nullptr;
-				instance->pass_idx = -1;
-
-				if (instance->input_port_count) {
-					instance->input_ports = memnew_arr(int, instance->input_port_count);
-					for (int i = 0; i < instance->input_port_count; i++) {
-						instance->input_ports[i] = -1; // If not assigned, will become default value.
-					}
-				}
-
-				if (instance->output_port_count) {
-					instance->output_ports = memnew_arr(int, instance->output_port_count);
-					for (int i = 0; i < instance->output_port_count; i++) {
-						instance->output_ports[i] = -1; // If not assigned, will output to trash.
-					}
-				}
-
-				if (instance->sequence_output_count) {
-					instance->sequence_outputs = memnew_arr(VisualScriptNodeInstance *, instance->sequence_output_count);
-					for (int i = 0; i < instance->sequence_output_count; i++) {
-						instance->sequence_outputs[i] = nullptr; // If it remains null, flow ends here.
-					}
-				}
-
-				if (Object::cast_to<VisualScriptLocalVar>(node.ptr()) || Object::cast_to<VisualScriptLocalVarSet>(*node)) {
-					// Working memory is shared only for this node, for the same variables.
-					Ref<VisualScriptLocalVar> vslv = node;
-
-					StringName var_name;
-
-					if (Object::cast_to<VisualScriptLocalVar>(*node)) {
-						var_name = String(Object::cast_to<VisualScriptLocalVar>(*node)->get_var_name()).strip_edges();
-					} else {
-						var_name = String(Object::cast_to<VisualScriptLocalVarSet>(*node)->get_var_name()).strip_edges();
-					}
-
-					if (!local_var_indices.has(var_name)) {
-						local_var_indices[var_name] = function.max_stack;
-						function.max_stack++;
-					}
-
-					instance->working_mem_idx = local_var_indices[var_name];
-
-				} else if (instance->get_working_memory_size()) {
-					instance->working_mem_idx = function.max_stack;
-					function.max_stack += instance->get_working_memory_size();
-				} else {
-					instance->working_mem_idx = -1; //no working mem
-				}
-
-				max_input_args = MAX(max_input_args, instance->input_port_count);
-				max_output_args = MAX(max_output_args, instance->output_port_count);
-
-				instances[F] = instance;
-			}
-
-			function.trash_pos = function.max_stack++; // create pos for trash
-
-			// Second pass, do data connections.
-			for (const VisualScript::DataConnection &F : dataconns) {
-				VisualScript::DataConnection dc = F;
-				ERR_CONTINUE(!instances.has(dc.from_node));
-				VisualScriptNodeInstance *from = instances[dc.from_node];
-				ERR_CONTINUE(!instances.has(dc.to_node));
-				VisualScriptNodeInstance *to = instances[dc.to_node];
-				ERR_CONTINUE(dc.from_port >= from->output_port_count);
-				ERR_CONTINUE(dc.to_port >= to->input_port_count);
-
-				if (from->output_ports[dc.from_port] == -1) {
-					int stack_pos = function.max_stack++;
-					from->output_ports[dc.from_port] = stack_pos;
-				}
-
-				if (from->get_sequence_output_count() == 0 && to->dependencies.find(from) == -1) {
-					// If the node we are reading from has no output sequence, we must call step() before reading from it.
-					if (from->pass_idx == -1) {
-						from->pass_idx = function.pass_stack_size;
-						function.pass_stack_size++;
-					}
-					to->dependencies.push_back(from);
-				}
-
-				to->input_ports[dc.to_port] = from->output_ports[dc.from_port]; // Read from wherever the stack is.
-			}
-
-			// Third pass, do sequence connections.
-			for (const VisualScript::SequenceConnection &F : seqconns) {
-				VisualScript::SequenceConnection sc = F;
-				ERR_CONTINUE(!instances.has(sc.from_node));
-				VisualScriptNodeInstance *from = instances[sc.from_node];
-				ERR_CONTINUE(!instances.has(sc.to_node));
-				VisualScriptNodeInstance *to = instances[sc.to_node];
-				ERR_CONTINUE(sc.from_output >= from->sequence_output_count);
-
-				from->sequence_outputs[sc.from_output] = to;
-			}
-
-			//fourth pass:
-			// 1) unassigned input ports to default values
-			// 2) connect unassigned output ports to trash
-			for (const int &F : node_ids) {
-				ERR_CONTINUE(!instances.has(F));
-
-				Ref<VisualScriptNode> node = script->nodes[F].node;
-				VisualScriptNodeInstance *instance = instances[F];
-
-				// Connect to default values.
-				for (int i = 0; i < instance->input_port_count; i++) {
-					if (instance->input_ports[i] == -1) {
-						// Unassigned, connect to default val.
-						instance->input_ports[i] = default_values.size() | VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT;
-						default_values.push_back(node->get_default_input_value(i));
-					}
-				}
-
-				// Connect to trash.
-				for (int i = 0; i < instance->output_port_count; i++) {
-					if (instance->output_ports[i] == -1) {
-						instance->output_ports[i] = function.trash_pos; //trash is same for all
-					}
-				}
-			}
-
-			functions[E.key] = function;
-		}
-	}
-}
-
-ScriptLanguage *VisualScriptInstance::get_language() {
-	return VisualScriptLanguage::singleton;
-}
-
-VisualScriptInstance::VisualScriptInstance() {
-}
-
-VisualScriptInstance::~VisualScriptInstance() {
-	{
-		MutexLock lock(VisualScriptLanguage::singleton->lock);
-
-		script->instances.erase(owner);
-	}
-
-	for (const KeyValue<int, VisualScriptNodeInstance *> &E : instances) {
-		memdelete(E.value);
-	}
-}
-
-/////////////////////////////////////////////
-
-/////////////////////
-
-Variant VisualScriptFunctionState::_signal_callback(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
-	ERR_FAIL_COND_V(function == StringName(), Variant());
-
-#ifdef DEBUG_ENABLED
-
-	ERR_FAIL_COND_V_MSG(instance_id.is_valid() && !ObjectDB::get_instance(instance_id), Variant(), "Resumed after yield, but class instance is gone.");
-	ERR_FAIL_COND_V_MSG(script_id.is_valid() && !ObjectDB::get_instance(script_id), Variant(), "Resumed after yield, but script is gone.");
-
-#endif
-
-	r_error.error = Callable::CallError::CALL_OK;
-
-	Array args;
-
-	if (p_argcount == 0) {
-		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
-		r_error.argument = 1;
-		return Variant();
-	} else if (p_argcount == 1) {
-		//noooneee, reserved for me, me and only me.
-	} else {
-		for (int i = 0; i < p_argcount - 1; i++) {
-			args.push_back(*p_args[i]);
-		}
-	}
-
-	Ref<VisualScriptFunctionState> self = *p_args[p_argcount - 1]; //hi, I'm myself, needed this to remain alive.
-
-	if (self.is_null()) {
-		r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
-		r_error.argument = p_argcount - 1;
-		r_error.expected = Variant::OBJECT;
-		return Variant();
-	}
-
-	r_error.error = Callable::CallError::CALL_OK;
-
-	Variant *working_mem = ((Variant *)stack.ptr()) + working_mem_index;
-
-	*working_mem = args; // Arguments go to working mem.
-
-	Variant ret = instance->_call_internal(function, stack.ptrw(), stack.size(), node, flow_stack_pos, pass, true, r_error);
-	function = StringName(); //invalidate
-	return ret;
-}
-
-void VisualScriptFunctionState::connect_to_signal(Object *p_obj, const String &p_signal, Array p_binds) {
-	ERR_FAIL_NULL(p_obj);
-	Vector<Variant> binds;
-	for (int i = 0; i < p_binds.size(); i++) {
-		binds.push_back(p_binds[i]);
-	}
-	binds.push_back(Ref<VisualScriptFunctionState>(this)); //add myself on the back to avoid dying from unreferencing
-
-	Vector<const Variant *> bind_ptrs;
-	bind_ptrs.resize(p_binds.size());
-	for (int i = 0; i < bind_ptrs.size(); i++) {
-		bind_ptrs.write[i] = &binds.write[i];
-	}
-
-	p_obj->connect(p_signal, Callable(this, "_signal_callback").bindp((const Variant **)bind_ptrs.ptr(), bind_ptrs.size()), CONNECT_ONESHOT);
-}
-
-bool VisualScriptFunctionState::is_valid() const {
-	return function != StringName();
-}
-
-Variant VisualScriptFunctionState::resume(Array p_args) {
-	ERR_FAIL_COND_V(function == StringName(), Variant());
-#ifdef DEBUG_ENABLED
-
-	ERR_FAIL_COND_V_MSG(instance_id.is_valid() && !ObjectDB::get_instance(instance_id), Variant(), "Resumed after yield, but class instance is gone.");
-	ERR_FAIL_COND_V_MSG(script_id.is_valid() && !ObjectDB::get_instance(script_id), Variant(), "Resumed after yield, but script is gone.");
-
-#endif
-
-	Callable::CallError r_error;
-	r_error.error = Callable::CallError::CALL_OK;
-
-	Variant *working_mem = ((Variant *)stack.ptr()) + working_mem_index;
-
-	*working_mem = p_args; // Arguments go to working mem.
-
-	Variant ret = instance->_call_internal(function, stack.ptrw(), stack.size(), node, flow_stack_pos, pass, true, r_error);
-	function = StringName(); //invalidate
-	return ret;
-}
-
-void VisualScriptFunctionState::_bind_methods() {
-	ClassDB::bind_method(D_METHOD("connect_to_signal", "obj", "signals", "args"), &VisualScriptFunctionState::connect_to_signal);
-	ClassDB::bind_method(D_METHOD("resume", "args"), &VisualScriptFunctionState::resume, DEFVAL(Array()));
-	ClassDB::bind_method(D_METHOD("is_valid"), &VisualScriptFunctionState::is_valid);
-	ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "_signal_callback", &VisualScriptFunctionState::_signal_callback, MethodInfo("_signal_callback"));
-}
-
-VisualScriptFunctionState::VisualScriptFunctionState() {
-}
-
-VisualScriptFunctionState::~VisualScriptFunctionState() {
-	if (function != StringName()) {
-		Variant *s = ((Variant *)stack.ptr());
-		for (int i = 0; i < variant_stack_size; i++) {
-			s[i].~Variant();
-		}
-	}
-}
-
-///////////////////////////////////////////////
-
-String VisualScriptLanguage::get_name() const {
-	return "VisualScript";
-}
-
-/* LANGUAGE FUNCTIONS */
-void VisualScriptLanguage::init() {
-}
-
-String VisualScriptLanguage::get_type() const {
-	return "VisualScript";
-}
-
-String VisualScriptLanguage::get_extension() const {
-	return "vs";
-}
-
-Error VisualScriptLanguage::execute_file(const String &p_path) {
-	return OK;
-}
-
-void VisualScriptLanguage::finish() {
-}
-
-/* EDITOR FUNCTIONS */
-void VisualScriptLanguage::get_reserved_words(List<String> *p_words) const {
-}
-
-bool VisualScriptLanguage::is_control_flow_keyword(String p_keyword) const {
-	return false;
-}
-
-void VisualScriptLanguage::get_comment_delimiters(List<String> *p_delimiters) const {
-}
-
-void VisualScriptLanguage::get_string_delimiters(List<String> *p_delimiters) const {
-}
-
-bool VisualScriptLanguage::is_using_templates() {
-	return false;
-}
-
-Ref<Script> VisualScriptLanguage::make_template(const String &p_template, const String &p_class_name, const String &p_base_class_name) const {
-	Ref<VisualScript> script;
-	script.instantiate();
-	script->set_instance_base_type(p_base_class_name);
-	return script;
-}
-
-bool VisualScriptLanguage::validate(const String &p_script, const String &p_path, List<String> *r_functions, List<ScriptLanguage::ScriptError> *r_errors, List<ScriptLanguage::Warning> *r_warnings, HashSet<int> *r_safe_lines) const {
-	return false;
-}
-
-Script *VisualScriptLanguage::create_script() const {
-	return memnew(VisualScript);
-}
-
-bool VisualScriptLanguage::has_named_classes() const {
-	return false;
-}
-
-bool VisualScriptLanguage::supports_builtin_mode() const {
-	return true;
-}
-
-int VisualScriptLanguage::find_function(const String &p_function, const String &p_code) const {
-	return -1;
-}
-
-String VisualScriptLanguage::make_function(const String &p_class, const String &p_name, const PackedStringArray &p_args) const {
-	return String();
-}
-
-void VisualScriptLanguage::auto_indent_code(String &p_code, int p_from_line, int p_to_line) const {
-}
-
-void VisualScriptLanguage::add_global_constant(const StringName &p_variable, const Variant &p_value) {
-}
-
-/* DEBUGGER FUNCTIONS */
-
-bool VisualScriptLanguage::debug_break_parse(const String &p_file, int p_node, const String &p_error) {
-	// Break because of parse error.
-
-	if (EngineDebugger::is_active() && Thread::get_caller_id() == Thread::get_main_id()) {
-		_debug_parse_err_node = p_node;
-		_debug_parse_err_file = p_file;
-		_debug_error = p_error;
-		EngineDebugger::get_script_debugger()->debug(this, false, true);
-		return true;
-	} else {
-		return false;
-	}
-}
-
-bool VisualScriptLanguage::debug_break(const String &p_error, bool p_allow_continue) {
-	if (EngineDebugger::is_active() && Thread::get_caller_id() == Thread::get_main_id()) {
-		_debug_parse_err_node = -1;
-		_debug_parse_err_file = "";
-		_debug_error = p_error;
-		EngineDebugger::get_script_debugger()->debug(this, p_allow_continue, true);
-		return true;
-	} else {
-		return false;
-	}
-}
-
-String VisualScriptLanguage::debug_get_error() const {
-	return _debug_error;
-}
-
-int VisualScriptLanguage::debug_get_stack_level_count() const {
-	if (_debug_parse_err_node >= 0) {
-		return 1;
-	}
-
-	return _debug_call_stack_pos;
-}
-
-int VisualScriptLanguage::debug_get_stack_level_line(int p_level) const {
-	if (_debug_parse_err_node >= 0) {
-		return _debug_parse_err_node;
-	}
-
-	ERR_FAIL_INDEX_V(p_level, _debug_call_stack_pos, -1);
-
-	int l = _debug_call_stack_pos - p_level - 1;
-
-	return *(_call_stack[l].current_id);
-}
-
-String VisualScriptLanguage::debug_get_stack_level_function(int p_level) const {
-	if (_debug_parse_err_node >= 0) {
-		return "";
-	}
-
-	ERR_FAIL_INDEX_V(p_level, _debug_call_stack_pos, "");
-	int l = _debug_call_stack_pos - p_level - 1;
-	return *_call_stack[l].function;
-}
-
-String VisualScriptLanguage::debug_get_stack_level_source(int p_level) const {
-	if (_debug_parse_err_node >= 0) {
-		return _debug_parse_err_file;
-	}
-
-	ERR_FAIL_INDEX_V(p_level, _debug_call_stack_pos, "");
-	int l = _debug_call_stack_pos - p_level - 1;
-	return _call_stack[l].instance->get_script_ptr()->get_path();
-}
-
-void VisualScriptLanguage::debug_get_stack_level_locals(int p_level, List<String> *p_locals, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
-	if (_debug_parse_err_node >= 0) {
-		return;
-	}
-
-	ERR_FAIL_INDEX(p_level, _debug_call_stack_pos);
-
-	int l = _debug_call_stack_pos - p_level - 1;
-	const StringName *f = _call_stack[l].function;
-
-	ERR_FAIL_COND(!_call_stack[l].instance->functions.has(*f));
-
-	VisualScriptNodeInstance *node = _call_stack[l].instance->instances[*_call_stack[l].current_id];
-	ERR_FAIL_COND(!node);
-
-	p_locals->push_back("node_name");
-	p_values->push_back(node->get_base_node()->get_text());
-
-	for (int i = 0; i < node->input_port_count; i++) {
-		String name = node->get_base_node()->get_input_value_port_info(i).name;
-		if (name.is_empty()) {
-			name = "in_" + itos(i);
-		}
-
-		p_locals->push_back("input/" + name);
-
-		//value is trickier
-
-		int in_from = node->input_ports[i];
-		int in_value = in_from & VisualScriptNodeInstance::INPUT_MASK;
-
-		if (in_from & VisualScriptNodeInstance::INPUT_DEFAULT_VALUE_BIT) {
-			p_values->push_back(_call_stack[l].instance->default_values[in_value]);
-		} else {
-			p_values->push_back(_call_stack[l].stack[in_value]);
-		}
-	}
-
-	for (int i = 0; i < node->output_port_count; i++) {
-		String name = node->get_base_node()->get_output_value_port_info(i).name;
-		if (name.is_empty()) {
-			name = "out_" + itos(i);
-		}
-
-		p_locals->push_back("output/" + name);
-
-		//value is trickier
-
-		int in_from = node->output_ports[i];
-		p_values->push_back(_call_stack[l].stack[in_from]);
-	}
-
-	for (int i = 0; i < node->get_working_memory_size(); i++) {
-		p_locals->push_back("working_mem/mem_" + itos(i));
-		p_values->push_back((*_call_stack[l].work_mem)[i]);
-	}
-}
-
-void VisualScriptLanguage::debug_get_stack_level_members(int p_level, List<String> *p_members, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
-	if (_debug_parse_err_node >= 0) {
-		return;
-	}
-
-	ERR_FAIL_INDEX(p_level, _debug_call_stack_pos);
-	int l = _debug_call_stack_pos - p_level - 1;
-
-	Ref<VisualScript> vs = _call_stack[l].instance->get_script();
-	if (vs.is_null()) {
-		return;
-	}
-
-	List<StringName> vars;
-	vs->get_variable_list(&vars);
-	for (const StringName &E : vars) {
-		Variant v;
-		if (_call_stack[l].instance->get_variable(E, &v)) {
-			p_members->push_back("variables/" + E);
-			p_values->push_back(v);
-		}
-	}
-}
-
-void VisualScriptLanguage::debug_get_globals(List<String> *p_locals, List<Variant> *p_values, int p_max_subitems, int p_max_depth) {
-	// No globals are really reachable in gdscript.
-}
-
-String VisualScriptLanguage::debug_parse_stack_level_expression(int p_level, const String &p_expression, int p_max_subitems, int p_max_depth) {
-	return "";
-}
-
-void VisualScriptLanguage::reload_all_scripts() {
-}
-
-void VisualScriptLanguage::reload_tool_script(const Ref<Script> &p_script, bool p_soft_reload) {
-}
-
-/* LOADER FUNCTIONS */
-
-void VisualScriptLanguage::get_recognized_extensions(List<String> *p_extensions) const {
-	p_extensions->push_back("vs");
-}
-
-void VisualScriptLanguage::get_public_functions(List<MethodInfo> *p_functions) const {
-}
-
-void VisualScriptLanguage::get_public_constants(List<Pair<String, Variant>> *p_constants) const {
-}
-
-void VisualScriptLanguage::get_public_annotations(List<MethodInfo> *p_annotations) const {
-}
-
-void VisualScriptLanguage::profiling_start() {
-}
-
-void VisualScriptLanguage::profiling_stop() {
-}
-
-int VisualScriptLanguage::profiling_get_accumulated_data(ProfilingInfo *p_info_arr, int p_info_max) {
-	return 0;
-}
-
-int VisualScriptLanguage::profiling_get_frame_data(ProfilingInfo *p_info_arr, int p_info_max) {
-	return 0;
-}
-
-VisualScriptLanguage *VisualScriptLanguage::singleton = nullptr;
-
-void VisualScriptLanguage::add_register_func(const String &p_name, VisualScriptNodeRegisterFunc p_func) {
-	ERR_FAIL_COND(register_funcs.has(p_name));
-	register_funcs[p_name] = p_func;
-}
-
-void VisualScriptLanguage::remove_register_func(const String &p_name) {
-	ERR_FAIL_COND(!register_funcs.has(p_name));
-	register_funcs.erase(p_name);
-}
-
-Ref<VisualScriptNode> VisualScriptLanguage::create_node_from_name(const String &p_name) {
-	ERR_FAIL_COND_V(!register_funcs.has(p_name), Ref<VisualScriptNode>());
-
-	return register_funcs[p_name](p_name);
-}
-
-void VisualScriptLanguage::get_registered_node_names(List<String> *r_names) {
-	for (const KeyValue<String, VisualScriptNodeRegisterFunc> &E : register_funcs) {
-		r_names->push_back(E.key);
-	}
-}
-
-VisualScriptLanguage::VisualScriptLanguage() {
-	singleton = this;
-
-	int dmcs = GLOBAL_DEF("debug/settings/visual_script/max_call_stack", 1024);
-	ProjectSettings::get_singleton()->set_custom_property_info("debug/settings/visual_script/max_call_stack", PropertyInfo(Variant::INT, "debug/settings/visual_script/max_call_stack", PROPERTY_HINT_RANGE, "1024,4096,1,or_greater")); //minimum is 1024
-
-	if (EngineDebugger::is_active()) {
-		// Debugging enabled!
-		_debug_max_call_stack = dmcs;
-		_call_stack = memnew_arr(CallLevel, _debug_max_call_stack + 1);
-
-	} else {
-		_debug_max_call_stack = 0;
-		_call_stack = nullptr;
-	}
-}
-
-VisualScriptLanguage::~VisualScriptLanguage() {
-	if (_call_stack) {
-		memdelete_arr(_call_stack);
-	}
-	singleton = nullptr;
-}
-- 
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